Grease-cup.



R. M. WAHLBN. GREASE CUE. APPLIYDATION FILED JUNE 16, 1913..

Patented' June 9, 1914.

. cylindrical RALPHMILTON WAHLEN, OF ELKHABT, INDIANA.

GREASE-CUP.

Specification of Letters Patent.

To all whom it may concern Be it known that I, RALPH M. WAHLEN, a citizen of the United States, residing at Elkhart, in the county of Elkhart and State of Indiana, have invented certain new .and use' ful Improvements in Grease-Cups, of which the following is a specification.

The invention relates generally to an ifm-- provement in grease cups, and particularly to a means for connecting the grease holding cup and 'expressing plunger in a manner^ to permit a simple and speedy relative adjustment' for forcing the grease to the point ofV use.

The main object of the present invention is the provision of a grease cup in which thev connection between the cup proper and plunger is arranged wholly within the 'cup and constructedv vto permit desired adjustment through a relatively longitudinal movement of the. parts, the connection providing for any debsired adjustment.

The' invention in .its preferred form of details will be described in the following specification, reference being had particularly to the accompanying drawings in vvhich:---

Figure 1 is a view in elevation partly in section illustrating the invention applied to a conventional form of grease cup, shown in use with a bolt connection for automobile springs. Fig. 2 is an elevation-of the spring locking ring. Fig. 3 is a broken edge view of the plunger.I Fig. 4 is an elevation of the plunger, the locking ring being shown in 'lace p Referringparticularly to the accompanying drawings,l the improved grease cup is holdin@ or locking the parts in practically shown as including a cup proper 1'of hollow form, provided with a terminal milled head 2, of increased diameter. The inner surface of the cylindrical wall of the cup is formed vwith a series of annular chan-` nels 3, said channels being. preferably arranged in regular spaced relation throughout the length of the wall, each channel being wholly independent of and in parallelism throughout with every other channel. The plunger comprises a disk like body 4 having a stem 5 projecting centrally from one plane face of the disk. The disk and stem are formed with a grease channel 6, opening wholly therethrough from end to end, 'to provide a passage for the lubricant, as will be evident.

As is usual in grease cups, the cup proper Y Patented June 9, 1914. Application led June 16, 1913. lSerial No. 773,885.

l is designed to be supplied with va suit-ablev quantity of thelubricant, and adjusted on 'to the plunger, the movement of the latter lengthwise the cup toward the hea-d serving to express the lubricant through the channel G `to the desired' point of application. The connection usually employed between the cup and plunger is that of a screw threaded connection, which not only requires time in its adjustment, but does not provide against independentmovement of the parts through the jar of the machinery to which the grease cup is applied.

It is therefore the primary' object of the invention to provide such a connection between the plunger and cup proper that the may be relatively adjusted by a simple en wise movement, and locked in the adjusted position against accidental movement. 'In carrying out this detail of the improvement, I provide the plunger 4 with an annular recess or channel 7, preferably arranged centrally ofthe peripheral wall of said plunger. A springring 8' is designed to seat in the channel 7 ,the `normal resiliency of said ring being 'such that its inner diameter is slightly less than the maximum diameter of the plunger. The ring is split, or divided, to' permit its 4compression when in place, it being understood that normally its exterior diameter is somewhat greater than the maximum diameter of the channels 3 in the cup l.

With the plunger in position in the cup, it is obvious that the ring 8 will engage one of the channels 3 in the cup, while being retained in the channel 7 in the plunger. The resiliency of the ring will maintain this connection against accidental displacement. In the' relative adjustment ofthe plunger and cup, to express vthe lubricant from the latter, a simple longitudinal movement only `of the cup is necessary, the pressure forcing the spring ring within the channel of the plunger to permit the movement of the head to the extent desired, the ring again engaging the appropriate channel 3 in the cup to lock the parts. It will of course be understood that the channels 3 in the cup are rounded in sectional contourto permit a comparatively easy separation of the ring therefrom under pressure.

F rom the above description it will be obvious that I provide a means whereby lthe relative adjustment of the cup and plunger may be effected by a simple longitudinal movement of the parts, the means serving also as a lock to prevent accidental move- 'teriorly formed with a series of annular channels, a cup-plunger operative Within the cup, and a spring ring carried by the plunger to coperate with the channels in the cup.

2. A grease cup ineluding a cup proper interior-ly formed with a series of annular parallel `channels, a plunger operative Within the cup, and formed With an annular Channel, and a divided spring ring seated in the channel in the plunger.

3 A grease cup including a cup proper internally formed with a series of annular channels, a cup-plunger operative Within the cup, and. yielding means carried by the plun ger for eoperation With the channels in the 4;. As an articleof manufacture, a grease eup comprising a body member and a cover member telescoping one Within the other, grooves formed in the adjacent Walls of said members adapted to register with each other, and a resilient open ring carried inone of said grooves and adapted to expand partly into the registering grooves to hold the members together.

In testimony whereof l aflix my signature in presence of tWo Witnesses.

RALPH MLTON VVAHLEN. Witnesses L. W. Coon,

GEORGE J. Ourson. 

